Towel holder



FIG. 1 is a perspective view of a towel holder showing our design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a side elevational view;

FIG. 5 is a side elevational view;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view.

CLAIM The ornamental design for a towel holder, as shown and described.